Those webs remind me of something they did a long time ago,. Monks used to use silk and gossamer from silk worms and more often cob web or would go into valleys where they knew there were lots of webbing from spiders abandoned and they would very carefully apply it to a stretcher just right and use it as a canvas for watercolor or more likely gauche which is watercolor except egg white is used as a binder instead of water to make it opaque,. Can look it up on google